解析QueryString的JavaScript类

以前写的一个解析QueryString的JS类,可以获取或设置QueryString中的值,记下了方便找 :)

使用示例:

var qs = new QueryString(query);
 
qs.set("ajaxids", ids)
qs.set("ajaxsn", new Date())
 
query = qs.toStr();

也可以连续调用:

query = new QueryString(query).set("ajaxids", ids).set("ajaxsn", new Date()).toStr();

其它用法就自己看代码琢磨吧。

完整代码(2010年1月30日,更新 -- 精简代码):

QueryString = function(qs){
        this.p={};
 
        if(!qs) qs=location.search;
 
        if(qs){
                var reg = /(?:^\?|&)(.*?)=(.*?)(?=&|$)/g, temp;
                while((temp = reg.exec(params)) != null) this.p[decodeURIComponent(temp[1])] = decodeURIComponent(temp[2]);
        }
 
        this.set = function(name, value){
                this.p[name] = value;
                return this;
        };
 
        this.get = function(name, def){
                var v = this.p[name];
                return (v != null) ? v : def;
        };
 
        this.has = function(name){
                return this.p[name] != null;
        };
 
        this.toStr = function(){
                var r = '?';
                for (var k in this.p) r += encodeURIComponent(k) + '=' + encodeURIComponent(this.p[k]) + '&';
                return r;
        };
};

注:其中的QueryString解析过程,来源于sohighthesky的《javascript获取url参数和script标签中获取url参数》,多谢sohighthesky的分享!

完整代码(原始版本):

QueryString = function(qs){
        this.p={};
 
        if(!qs)
                qs=location.search;
 
        if(qs) {
                var b = qs.indexOf('?');
                var e = qs.indexOf('#');
 
                if(b >= 0){
                        qs = e < 0 ? qs.substr(b + 1) : qs.substring(b + 1,e);
 
                        if(qs.length > 0){
                                qs = qs.replace(/\+/g, ' ');
 
                                var a = qs.split('&');
 
                                for (var i = 0; i < a.length; i++) {
                                        var t = a[i].split('=');
                                        var n = decodeURIComponent(t[0]);
                                        var v = (t.length == 2) ? decodeURIComponent(t[1]) : n;
                                        this.p[n] = v;
                                }
                        }
                }
        }
 
        this.set = function(name, value){
                this.p[name] = value;
                return this;
        };
 
        this.get = function(name, def){
                var v = this.p[name];
                return (v != null) ? v : def;
        };
 
        this.has = function(name) {
                return this.p[name] != null;
        };
 
        this.toStr = function() {
                var r='?';
                for (var k in this.p) {
                        r += encodeURIComponent(k) + '=' + encodeURIComponent(this.p[k]) + '&';
                }
                return r;
        };
};